Valve-seat liner



A linerfllllhaying upper and lower Patented. bec-12,' l 'Y OFFICE crinronn c. LEE, or maERDEmr, sou'r'rr DAKOTA, nssIGNoB. To x. o. LEE &soN co.,

or ABERDEEN, soUrrr Ducarme CORPORATION 'or sovra-DAKOTA VALVE-SEATLINER invention relates to improvements in valve seat liners.

'An object ofthe invention'is to provide aA `valve seat-liner'which isadapted to be irlsorted into a recessin the intake or exhaust passagesofacylinder head orblock.

.A further object-of .the invention is lto f of the liner in a boredrecess at the outer end 'of an intakeor exhaust passage in a cylinderx-block or head and being adapted tobeheld securely at its upper end.

This invention will be best' understood 'from a consideratonofthefollowing detailed' de scription, inv viewof the accom;4 panyingdrawings. forming. a part ofthe specification; neverthelessit is to beunderstood that the invention is not confinedV to the disclosure,v beingsusceptible A of such change and modifications as shalldene no materialdeparture from the'salient features i In the drawllgrs.-

- Figure "cylinderfblock Shwing the liner i111 place',

liner secured in'position -inodilijed for-ni. lshowing the linerinserted in ai linde block-aand.-

I liner scllredinposition.

Figure 2 -isyasimilar viewl showing the re 3. 1s. a vertical sectionalview of 4 a v 4 yis a similar view showing the -Referring to thedrawn Idesign jured to such an extent that itlisl impossible to'grind 'ihtofproperly seat the vvalvepthe of the invention as expressed inthe-appended 1 isa vertical sectionalfview offa the numeral 5 tes .thewall-off'eit er an intake or; .exhaust passageof a cylinder. .block-6.

. When .the valve 'seat becomes- .worn or in-jv ApplicationiledvSeptember 18, 1.929. Serial No .`393,504.

surfaces 11 and 12 is seated in 'the recess 7. A

Said .liner is'A of slightly 'greater external diameter than the recessso that the liner -must be forcedy into the 'recess 'and be maintainedtherein through frictional engagement with the wall8.

-After theilinerhas been seatedin the re l cess 7 the outer .end ofthewall 8 is forced invwardly tocontact .with theupper bevelled.

surface 11 ofthe liner as shown at 13 in Fig. 2.- This operationprovides further' means of vsecurely retaining theli'ner 1Q in place.Referring more particularly to Figs. 3 and 'invention isl provided whichgives the same 4 it will be seen that a modified form of the 'resultsobtained by the liner as shown in Figs. 'Q

-1 and 2 but the liner isheld within its re-k I- spective. recess whichhas been formedby boringthe upper end of the wall ofthe intake orexhaust passage by means of a'iange' at ythe outer end of thewall of therecess which -is formed byrolling or-swajgingthe metal of y' .thevcylinder block at the outerend of said The liner 18 is mounted within arecess 1 6 which opens into the upper end of anintake or an exhaustpassage 1 7', vwhich has its termined depth-so that'when a linerv 18conf .structed in accordance with the principles of the'invention isforced into the recess the upper or outer end of the ring will belocated Y below the plane passing through the top of i theblock 6.'A "Bythis constructionl an annuendof" the liner 18 and the through the outerface' ofthe lar spacerestricted in width is locatedbe?- tween the planepassing'throughv the -outer lock.'4 The 1iner:18 is formed of cast metalor of glane passing any other metal suitable for the purpose and iscylindrical v in shape.'y The inner face of the li-ner when in 'positionis contiguous with the.

Surfac'e of"the passage 17. However', if thisV is not' the ca se. theinner face of the liner '95" "maybe slightly rebored in order vthat itwill be 1n the'saine curved surfacewith the. wall.

'ofthepa'ssage 17. The inner outer edge of' thelilier'assh'own at 19, issheared o at an'4 ticiileylidrical wall Sand' abuse. portion 9.

angle' or is rounded in any approved manner centric with said passage,aliner mounted in in order to facilitate the insertion of the linerwithin the recess 16. Furthermore, the liner is of slightly largerdiameter than the dia eter of the recess so that when the liner isforced into position it will frictionally engage the walls of the recessfor aiding in maintaining the liner in position.

The outer extreme edge 20 of the Wall of the block 6 extends above theouter face or end of the liner 18 and this edge is rolled or swaged overas shown at 21 in Fig. 4 in order to provide a securing flange whichabuts the outer end of the liner 18 for retaining the the recess, meansformed integrally with the block and engaging the outer end of the linerfor aiding in retaining the liner against displacement.

CLIFFORD C. LEE.

1. A cylinder block construction having a vertical passage openingthrough the top of thevblock, said block being provided with a boredrecess adjacent the opening in said b1ock,\said recess having a verticalcylindrical wall, a liner fitted within said recess and of greaterexternal diameter than the diameter of said recess whereby said linerwill be frictionally held within said recess, said liner being providedat its outer edge with an annular bevelled surface, and means on theouter edge of the Wall' of said recess being adapted to retain saidliner in position.

2. A cylinder block construction having a vertical passage openingthrough the top of the block, said block being provided with a boredrecess adjacent the opening in said block, said recess having a verticalcylindrical wall, a liner fitted within said recess and of greaterexternal diameter than the diameter of said recss whereby said linerwill be frictionally held within said recess, the outer` peripheryofsaid liner being disposed substantially within the outer edge ofsaidrecess, and the outer edge of the wall of said recess being rolledinwardly to engage the outer surface of said liner.

3. A cylinder block construction provided with a passage opening througha face of the block, a bored recess opening into the passage at theouter end thereof and concentric with said passage, a liner mounted inthe recess, and a flange projecting inwardly from the block at theVouter end of the wall of said recess and extending over the liner foraiding in retaining the liner in position.

4. A cylinder block construction provided" with a passage openingthrough a face of the block, a counterbored recess opening into thepassage at the outer end thereof ,and con-

